GBU406-K

Overview

The Taiwan Semiconductor GBU406-K is a single-phase standard bridge rectifier rated for an average forward current of 4A and a repetitive peak reverse voltage of 800V. It utilizes the GBU surface-mount package with four pins. Key electrical specifications include a maximum forward voltage of 1.1V at 4A, a non-repetitive peak surge current capability of 150A, and a junction capacitance of 45pF. The device operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• High case dielectric strength of 1500VRMS
• High surge current capability
• Halogen-free construction according to IEC 61249-2-21

Applications

• Switching mode power supply (SMPS)
• Adapters
• Lighting application

Procurement Notes

Verify component authenticity by checking the marking code "GBU406" on the device body. Confirm compliance with UL Recognized File # E-326243 and RoHS standards. Ensure the ordering code matches the specific voltage rating required for the circuit design before finalizing procurement.

Selection Notes

Select this component when an 800V reverse voltage rating is necessary for AC-to-DC conversion in compact designs. The GBU package facilitates automated surface-mount assembly. Verify that the thermal resistance characteristics align with the system's heat dissipation requirements under continuous load conditions.

Part Context

This part belongs to the GBU404-K through GBU407-K series from Taiwan Semiconductor. The series covers voltage ratings from 400V to 1000V while maintaining a consistent 4A current capacity. The GBU406-K specifically provides the 800V option within this standardized product family.

Replacement Considerations

Cross-reference with other manufacturers offering GBU packages and 800V/4A ratings. Verify pinout compatibility and physical dimensions match the PCB footprint. Ensure equivalent thermal performance and surge current capabilities are maintained during substitution.